Knife block



FIG. 1 is a front view of a knife block showing my new design;

FIG. 2 is a back view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a bottom view of FIG. 1;

FIG. 5 is a right side view of FIG. 1;

FIG. 6 is a back right perspective of FIG. 1; and,

FIG. 7 is a top right perspective of FIG. 1 showing the knife block in an environmental use. 

The ornamental design for a knife block, as shown and described. 